Bottle closure



A. l. ROSHKIND BOTTLE CLOSURE Jan. '15, 1952 Filed April 26, 1949 INVENTOR.'

Patented Jan. 15, 1952 Allan I. Roshkind, Chicagojllh, assignor to A. B. Dick Company, Chicago, 111., a corporation of Illinois Application April 26, 1949, Serial No. 89,639

This invention relates to closures, and more particularly to a screw threaded closure havin particular merit when used with containers for packaging content material having volatile constituents in order to minimize the loss of such volatiles by evaporation.

Very oiten,'substances, either consisting of or diluted with volatile materials and solvents are packaged in containers adapted to make the content material conveniently available for intermittent use as the occasion demands. The user may'have several calls for the material within a short space of time, such as in the use of eradicating fluid in stencil duplication, and on such occasions, it has been found by practical experience, that the user invariably makes only a slight pretense at properly positioning the closure on the container permitting possible loss of content material by evaporation. Yet, gradual loss of the volatile constituents soon renders the remaining substance unfit for the purpose for which it was intended.

'Various means have been devised by suppliers of such materials to prevent such careless and haphazard use but such practices have suffered from increased costs or from the resistance of the purchaser to the more regimented technique.

Loss by evaporation not only occurs from improper placement of the closure, but it has been found that a large number of packages are improperly sealed with conventional caps even when tightly screwed upon the bottle or container with the result that losses occur during shipment and storage, especially when the volatile constituents comprise low boiling solvents of the type ether and alcohol. Evaporation under such conditions may be aggravated upon exposure to relatively high temperatures which-increase internal pressure within the container. It is an object of this invention to provide a closure which is adapted to establish a proper sealing relation with the container even when positioned in a careless and haphazard manner. Another object is to produce a closure capable of establishing an improved sealing relation more efliciently to resist evaporation of content material when the closure is properly positioned. A further object is to provide'a closure which is not unlike conventional closures in application but which is capable of establishing a sealing relation on the slightest pretense of replacement to compensate for careless operation. More particularly, it is an objectof this invention to provide a screw threaded closure which will establish an improved sealing relation when 5 Claims. (01.21543) properly screwed into place and which will still provide a sealing relation in the event that the operator fails properly to screw the closure into place or in the event that the operator merely positions the closure over the opening of the container. Y

. The objects of this invention are achieved with a threaded closure having an integral part which establishes a sealing relation with the neck of the bottle or container merely upon placement of the closure in proper relation on the cont'ainer. The sealing relation is further improved if the closure is screwed onto the container, and when properly screwed down, a new sealing relation is established which is far more efiicient than that heretofore secured by conventional caps.

Fig. 1 shows separate perspective views of the container and the cap assembly.

Fig. 2 is an elevated cross-sectional view of the cap immediately on engagement of the inner tubular element with the container and before threaded engagement between container and cap skirt. Fig. 3 is an elevated cross-sectional view of parts in final sealing disposition. Description of my new and improved closure will be made in connection with a bottle having a'screw neck and an annular portion bulging inwardly from a spaced apart portion of the rim of the neck. Although the bulging portion imparts some advantages as will hereinafter be pointed out, its presence is not necessary for the successful operation of the closure.

' The closure has a top wall ID with a threaded skirt ll depending integrally from the outer rim of the top wall and'dimensioned threadably to engage the threaded end 12 of the neck l3 of the bottle l4. Depending integrally from an intermediate portion 'of the top wall I 0 is'a substantially concentric resilient tubular member l5 dimensioned to enter the opening I 6 the neck and to engage the internal wall of the neck all around in sealingrelationimmediately-upon entrance.

The tubular member [5 is formed with a gradual taper havingits greatest thickness at the base where it joins the top wall while the outer end portion l 6 is tapered inwardly at a sharper angle to facilitate entrance of the tubular member l5 into the neck and to operate as a self centering element for the closure. The tubular member is made to extend beyond the threaded portion. of the skirt II for the purposes of establishing a' sealing relation all around in the prevention of illustrated drawing.

ment of the closure into and 'out of threaded of a shaft 19 which may constitute part of an applicator, such as the brush 20 shown in the To facilitate turning moverubbers, neoprene, polyethylene, vinyl polymers and copolymers such as polyvinyl chloride; vinyl chloride-vinyl acetate copolymer, polyvinylidene chloride and 'copolymers thereof with vinyl chloride and vinyl acetate.

"Asshown in Figure 2 asealingrelation-is established-between the lower zendportioncfthe tubular: member 15 and .--the neck 13 assoon; as the member enters the neck portion. As the tubular member is actuated farther into the neck portion, it is further deformed by the bulging portion 22 to establish amoreefiective seal. When, finally, the closure is tightlyscrewed upon-theneck,v it will be ami'arent that a sealing relation exists throughout the length of the tubular-member which augments the sealing relation'whichfis firmlyestablished between the rim-ofthe-neck and the underside of the top wall of the closure. The tubularmember not only-provides for aconsiderably greater amount of sealing surface but itrreduces access of the contentmaterial and its vapors to the area between the rim and the closure; which might otherwise permit loss by evaporationbecause of an improper fit: not infrequently encountered in commercial units.

By: the arrangement described, it will-be fur: therapparent that any internal pressurewhich might be built up by the content material-will operate to press the tubular member against the neck of the container thereby further-toimprove, as the'occasion demands, the "sealing relation.

lt-"will be understood that numerous changes may be made in the details of construction, arrangement and operation without departing from-the spirit of the invention; especially'as defined-in thefollOWing claims.

What is claimed is:

1. -A- closure comprisinga top wall, a screw threaded'skirt depending from the top Wall-for fthreaded engagement with the outer Wall of the neck of the container, a tubular sleeve substantially concentric with the skirt depending from an inner portion of the top wall and dimensioned to be of slightly greater outside diameter than the inner'diameter of the neck and of greater length than the threaded portion oi the skirt whereby'the. side wall of the tubular sleeve is deflected inwardly and a sealing relation .is'estab- 4 lished even before the threaded engagement isefiected, and a cylindrical section depending from the central portion of the top wall in concentric spaced relation with the sleeve, a dispenser: hav ing a supporting shaft, and means forniing .a part of the cylindrical section for securimg. the end of the shaft thereto in the assembled relation.

2.-"A closure for use'ona container hav'ug a threaded neck comprising a top wall,-a s rew threaded skirt depending from the top Wall for threaded engagement with the outer wall of th e neck. of. the container, a tubular sleeve substanq tially concentric withv the skirt and spaced in-.

wa'rcllytherefrom' and dimensioned to be of :greatof" before threaded engagement is efiected; a;- dispenser, and means depending from af'central portion of the wall in inwardly spaced relation '9 with the sleeve for supporting the dispenser, in

position' oinse. r 1 39A closure as claimed in claim 2in-which the outer end portion: of the tubular: sleeve is tapered inwardly to facilitate entrance thereof into the neck of the: container in advance o1 threaded engagement. g

= 4." A closure as claimedin claim 2 inwhich rthe tubular, sleeve is dimensioned to: be of smaller outside diameter than the opening of the neck of the containerin theouter end portion thereof and of greater diameter. through the major portion of the remainder'itherebyto .facilitate entrance of :the tubular member into the neck of: the container and establish a sealing relation therewith-upon insertion.

'5'. A-closure for' use establishing asealing relation with a container havingan annular bulge Ispaced -.a short" distance from the threaded neck of the containen said closure comprising' a top walk-a screw threaded skirt depending 'from the top' wall to bring the-top wall in sealing relation with the rim upon actuation oithe closure :into position-of use, a tubular section depending -fromfthe top wall in concentrically inwardlwspaced relation :from the skirt and dimensioned resiliently to engage the inner wall-of thexneck of the closure upon insertion; before threaded engagement and tobe further engaged all" around by. said. bulge upon tightening the closure: onto the container for purposes of in,- creasing thesealingrelation, a dispenser, and means depending-from a central portion of the wall in spacedrelation'with the tubular section for supporting the dispenser in position of use.

' I..-ROSHKIND.

, REFERENCES CITED The following references are-of record in the rile-of this patent:

UNITED STATES PATENTS. .f'

Number Name Date 1,353,909 Ingram et al; Sept. .28, .1920 1,595,323 Van Sant Aug. 10, 1926 1,595,324 Van Sant Aug. 10, 1926 1,616,274 Mulford Feb. 1,1927 1 ,889,209 Mazoyer Nov. 29, 1932 1,898,342 Cuthbert. Feb.21,- 1933 2,017,606 .Mengle Oct. 15,1935 2,072,536 Tricke'y'et al. -Mar. 2, 1937 2,173,959 Britt Sept; 26, 1939 2,231,418 Trotter -r Feb. 11, 1941 2,241,846 Cuthbert- -1 May 13,1941 

